java.util.regex.Matcher.reset()方法

java.util.regex.Matcher.reset()方法重置此匹配器。

聲明

以下是java.util.regex.Matcher.reset()方法的聲明。

public Matcher reset()

返回值

這個匹配器。

示例

以下示例顯示了java.util.regex.Matcher.reset()方法的用法。

package com.zaixian;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class MatcherDemo {
   private static String REGEX = "(a*b)(foo)";
   private static String INPUT = "aabfooaabfooabfoob";
   private static String REPLACE = "-";

   public static void main(String[] args) {
      Pattern pattern = Pattern.compile(REGEX);

      // get a matcher object
      Matcher matcher = pattern.matcher(INPUT);
      matcher.region(10, 15);
      System.out.println("Before reset, regionStart(): " + matcher.regionStart());
      System.out.println("Before reset, regionEnd(): " + matcher.regionEnd());

      matcher.reset();
      System.out.println("After reset, regionStart(): " + matcher.regionStart());
      System.out.println("After reset, regionEnd(): " + matcher.regionEnd());
   }
}

編譯並運行上面的程式，這將產生以下結果 -

Before reset, regionStart(): 10
Before reset, regionEnd(): 15
After reset, regionStart(): 0
After reset, regionEnd(): 18